TEA (tclconfig) Source Code

/*
 * tclZipfs.c --
 *
 *    Implementation of the ZIP filesystem used in TIP 430
 *    Adapted from the implentation for AndroWish.
 *
 * Coptright (c) 2016-2017 Sean Woods <[email protected]>
 * Copyright (c) 2013-2015 Christian Werner <[email protected]>
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * This file is distributed in two ways:
 *   generic/tclZipfs.c file in the TIP430 enabled tcl cores
 *   compat/tclZipfs.c file in the tclconfig (TEA) file system, for pre-tip430 projects
 */

#include "tclInt.h"
#include "tclFileSystem.h"

#if !defined(_WIN32) && !defined(_WIN64)
#include <sys/mman.h>

#define MAP_FILE 0
#endif

#ifdef HAVE_ZLIB
#include "zlib.h"
#include "crypt.h"

#ifdef CFG_RUNTIME_DLLFILE
/*
** We are compiling as part of the core.
** TIP430 style zipfs prefix
*/
#define ZIPFS_VOLUME      "//zipfs:/"
#define ZIPFS_VOLUME_LEN  9
#define ZIPFS_APP_MOUNT   "//zipfs:/app"
#define ZIPFS_ZIP_MOUNT   "//zipfs:/lib/tcl"
#else
/*
** We are compiling from the /compat folder of tclconfig
** Pre TIP430 style zipfs prefix
** //zipfs:/ doesn't work straight out of the box on either windows or Unix
** without other changes made to tip 430
*/
#define ZIPFS_VOLUME      "zipfs:/"
#define ZIPFS_VOLUME_LEN  7
#define ZIPFS_APP_MOUNT   "zipfs:/app"
#define ZIPFS_ZIP_MOUNT   "zipfs:/lib/tcl"
#endif
/*
 * Various constants and offsets found in ZIP archive files
 */

#define ZIP_SIG_LEN                     4

/* Local header of ZIP archive member (at very beginning of each member). */

typedef struct ZipFile {
    char *name;               /* Archive name */
    Tcl_Channel chan;         /* Channel handle or NULL */
    unsigned char *data;      /* Memory mapped or malloc'ed file */
    long length;              /* Length of memory mapped file */
    unsigned char *tofree;    /* Non-NULL if malloc'ed file */
    int nfiles;               /* Number of files in archive */
    unsigned long baseoffs;             /* Archive start */
    long baseoffsp;            /* Password start */
    unsigned long centoffs;             /* Archive directory start */
    unsigned char pwbuf[264];          /* Password buffer */
#if defined(_WIN32) || defined(_WIN64)
    HANDLE mh;
#endif
    unsigned long nopen;                /* Number of open files on archive */
    struct ZipEntry *entries; /* List of files in archive */
    struct ZipEntry *topents; /* List of top-level dirs in archive */
#if HAS_DRIVES
    int mntdrv;                  /* Drive letter of mount point */
#endif
    int mntptlen;             /* Length of mount point */
    char mntpt[1];            /* Mount point */

    0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0
};

/*
 * Table to compute CRC32.
 */

static const z_crc_t crc32tab[256] = {
    0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
    0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
    0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
    0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
    0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
    0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
    0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,

    0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
    0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
    0x2d02ef8d,
};

const char *zipfs_literal_tcl_library=NULL;

/* Function prototypes */
int TclZipfs_Mount(Tcl_Interp *interp, const char *zipname, const char *mntpt,const char *passwd);
static int TclZipfs_AppHook_FindTclInit(const char *archive);
static int Zip_FSPathInFilesystemProc(Tcl_Obj *pathPtr, ClientData *clientDataPtr);
static Tcl_Obj *Zip_FSFilesystemPathTypeProc(Tcl_Obj *pathPtr);
static Tcl_Obj *Zip_FSFilesystemSeparatorProc(Tcl_Obj *pathPtr);
static int Zip_FSStatProc(Tcl_Obj *pathPtr, Tcl_StatBuf *buf);
static int Zip_FSAccessProc(Tcl_Obj *pathPtr, int mode);
static Tcl_Channel Zip_FSOpenFileChannelProc(
    Tcl_Interp *interp, Tcl_Obj *pathPtr,
    int mode, int permissions
);
static int Zip_FSMatchInDirectoryProc(
    Tcl_Interp* interp, Tcl_Obj *result,
    Tcl_Obj *pathPtr, const char *pattern,
    Tcl_GlobTypeData *types
);
static Tcl_Obj *Zip_FSListVolumesProc(void);
static const char *const *Zip_FSFileAttrStringsProc(Tcl_Obj *pathPtr, Tcl_Obj** objPtrRef);
static int Zip_FSFileAttrsGetProc(
    Tcl_Interp *interp, int index, Tcl_Obj *pathPtr,
    Tcl_Obj **objPtrRef
);
static int Zip_FSFileAttrsSetProc(Tcl_Interp *interp, int index, Tcl_Obj *pathPtr,Tcl_Obj *objPtr);
static int Zip_FSLoadFile(Tcl_Interp *interp, Tcl_Obj *path, Tcl_LoadHandle *loadHandle,
               Tcl_FSUnloadFileProc **unloadProcPtr, int flags);
static void TclZipfs_C_Init(void);

/*
 * Define the ZIP filesystem dispatch table.
 */

MODULE_SCOPE const Tcl_Filesystem zipfsFilesystem;

const Tcl_Filesystem zipfsFilesystem = {
    "zipfs",
    sizeof (Tcl_Filesystem),
    TCL_FILESYSTEM_VERSION_2,
    Zip_FSPathInFilesystemProc,
    NULL, /* dupInternalRepProc */
    NULL, /* freeInternalRepProc */
    NULL, /* internalToNormalizedProc */
    NULL, /* createInternalRepProc */
    NULL, /* normalizePathProc */
    Zip_FSFilesystemPathTypeProc,
    Zip_FSFilesystemSeparatorProc,
    Zip_FSStatProc,
    Zip_FSAccessProc,
    Zip_FSOpenFileChannelProc,
    Zip_FSMatchInDirectoryProc,
    NULL, /* utimeProc */
    NULL, /* linkProc */
    Zip_FSListVolumesProc,
    Zip_FSFileAttrStringsProc,
    Zip_FSFileAttrsGetProc,
    Zip_FSFileAttrsSetProc,
    NULL, /* createDirectoryProc */
    NULL, /* removeDirectoryProc */
    NULL, /* deleteFileProc */
    NULL, /* copyFileProc */
    NULL, /* renameFileProc */
    NULL, /* copyDirectoryProc */
    NULL, /* lstatProc */
    (Tcl_FSLoadFileProc *) Zip_FSLoadFile,
    NULL, /* getCwdProc */
    NULL, /* chdirProc*/
};



/*
 *-------------------------------------------------------------------------
 *
 * ReadLock, WriteLock, Unlock --
 *

    }
    return TCL_OK;

error:
    ZipFSCloseArchive(interp, zf);
    return TCL_ERROR;
}

static void TclZipfs_C_Init(void) {
    static const Tcl_Time t = { 0, 0 };
    if (!ZipFS.initialized) {
#ifdef TCL_THREADS
        /*
         * Inflate condition variable.
         */
        Tcl_MutexLock(&ZipFSMutex);
        Tcl_ConditionWait(&ZipFSCond, &ZipFSMutex, &t);
        Tcl_MutexUnlock(&ZipFSMutex);
#endif
        Tcl_FSRegister(NULL, &zipfsFilesystem);
        Tcl_InitHashTable(&ZipFS.fileHash, TCL_STRING_KEYS);
        Tcl_InitHashTable(&ZipFS.zipHash, TCL_STRING_KEYS);
        ZipFS.initialized = ZipFS.idCount = 1;
    }
}


/*
 *-------------------------------------------------------------------------
 *
 * TclZipfs_Mount --
 *
 *      This procedure is invoked to mount a given ZIP archive file on

    unsigned char *q;
#if HAS_DRIVES
    int drive = 0;
#endif

    ReadLock();
    if (!ZipFS.initialized) {

        TclZipfs_C_Init();

    }
    if (zipname == NULL) {
        Tcl_HashSearch search;
        int ret = TCL_OK;

        i = 0;
        hPtr = Tcl_FirstHashEntry(&ZipFS.zipHash, &search);

    if (Tcl_Write(out, buf, len) != len) {
wrerr:
    Tcl_AppendResult(interp, "write error", (char *) NULL);
    Tcl_Close(interp, in);
    return TCL_ERROR;
    }
    if ((len + pos[0]) & 3) {
        unsigned char abuf[8];

        /*
         * Align payload to next 4-byte boundary using a dummy extra
         * entry similar to the zipalign tool from Android's SDK.
         */
        align = 4 + ((len + pos[0]) & 3);
        zip_write_short(abuf, 0xffff);
        zip_write_short(abuf + 2, align - 4);
        zip_write_int(abuf + 4, 0x03020100);
        if (Tcl_Write(out, (const char *)abuf, align) != align) {
            goto wrerr;
        }
    }
    if (passwd != NULL) {
        int i, ch, tmp;
        unsigned char kvbuf[24];
        Tcl_Obj *ret;

            Tcl_ListObjAppendElement(interp, result, Tcl_NewStringObj(z->name, -1));
        }
    }
    Unlock();
    return TCL_OK;
}


Tcl_Obj *TclZipfs_TclLibrary(void) {
    if(zipfs_literal_tcl_library) {
        return Tcl_NewStringObj(zipfs_literal_tcl_library,-1);
    } else {
        Tcl_Obj *vfsinitscript;
        int found=0;
        
        /* Look for the library file system within the executable */
        vfsinitscript=Tcl_NewStringObj(ZIPFS_APP_MOUNT "/tcl_library/init.tcl",-1);
        Tcl_IncrRefCount(vfsinitscript);
        found=Tcl_FSAccess(vfsinitscript,F_OK);
        Tcl_DecrRefCount(vfsinitscript);
        if(found==TCL_OK) {
            zipfs_literal_tcl_library=ZIPFS_APP_MOUNT "/tcl_library";
            return Tcl_NewStringObj(zipfs_literal_tcl_library,-1);
        }
#if defined(_WIN32) || defined(_WIN64)
        HMODULE hModule = TclWinGetTclInstance();
        WCHAR wName[MAX_PATH + LIBRARY_SIZE];
        char dllname[(MAX_PATH + LIBRARY_SIZE) * TCL_UTF_MAX];

        if (GetModuleFileNameW(hModule, wName, MAX_PATH) == 0) {
            GetModuleFileNameA(hModule, dllname, MAX_PATH);
        } else {
            ToUtf(wName, dllname);
        }
        /* Mount zip file and dll before releasing to search */
        if(TclZipfs_AppHook_FindTclInit(dllname)==TCL_OK) {
            return Tcl_NewStringObj(zipfs_literal_tcl_library,-1);
        }
#else
#ifdef CFG_RUNTIME_DLLFILE
        /* Mount zip file and dll before releasing to search */
        if(TclZipfs_AppHook_FindTclInit(CFG_RUNTIME_LIBDIR "/" CFG_RUNTIME_DLLFILE)==TCL_OK) {
            return Tcl_NewStringObj(zipfs_literal_tcl_library,-1);
        }
#endif
#endif
#ifdef CFG_RUNTIME_ZIPFILE
        if(TclZipfs_AppHook_FindTclInit(CFG_RUNTIME_LIBDIR "/" CFG_RUNTIME_ZIPFILE)==TCL_OK) {
            return Tcl_NewStringObj(zipfs_literal_tcl_library,-1);
        }
        if(TclZipfs_AppHook_FindTclInit(CFG_RUNTIME_SCRDIR "/" CFG_RUNTIME_ZIPFILE)==TCL_OK) {
            return Tcl_NewStringObj(zipfs_literal_tcl_library,-1);
        }
#endif
    }
    if(zipfs_literal_tcl_library) {
        return Tcl_NewStringObj(zipfs_literal_tcl_library,-1);
    }
    return NULL;
}

/*
 *-------------------------------------------------------------------------
 *
 * ZipFSTclLibraryObjCmd --
 *
 *      This procedure is invoked to process the "zipfs::root" command. It
 *      returns the root that all zipfs file systems are mounted under.

    if (altPath != NULL) {
        Tcl_DecrRefCount(altPath);
    }
    return ret;
#endif
}

#endif /* HAVE_ZLIB */










































/*
 *-------------------------------------------------------------------------
 *
 * TclZipfs_Init --
 *
 *    Perform per interpreter initialization of this module.
 *

 */

MODULE_SCOPE int
TclZipfs_Init(Tcl_Interp *interp)
{
#ifdef HAVE_ZLIB
    /* one-time initialization */
    WriteLock();
    /* Tcl_StaticPackage(interp, "zipfs", TclZipfs_Init, TclZipfs_Init); */
    if (!ZipFS.initialized) {










        TclZipfs_C_Init();



    }
    Unlock();
    if(interp != NULL) {
        static const EnsembleImplMap initMap[] = {
            {"mount",      ZipFSMountObjCmd,    NULL, NULL, NULL, 0},
            {"unmount",      ZipFSUnmountObjCmd,    NULL, NULL, NULL, 0},
            {"mkkey",      ZipFSMkKeyObjCmd,    NULL, NULL, NULL, 0},

    /*
     * Tclkit_MainHook --
     * Performs the argument munging for the shell
     */
    char *archive;

    Tcl_FindExecutable(*argv[0]);
    archive=(char *)Tcl_GetNameOfExecutable();
    TclZipfs_Init(NULL);
    /*
    ** Look for init.tcl in one of the locations mounted later in this function
    */
    if(!TclZipfs_Mount(NULL, archive, ZIPFS_APP_MOUNT, NULL)) {
        int found;
        Tcl_Obj *vfsinitscript;

                }
            }
        }
    }
    return TCL_OK;
}









































#ifndef HAVE_ZLIB

/*
 *-------------------------------------------------------------------------
 *

  method clean {} {
    set builddir [file normalize [my define get builddir]]
    if {![file exists $builddir]} return
    if {[file exists [file join $builddir make.tcl]]} {
      ::practcl::domake.tcl $builddir clean
    } else {
      catch {::practcl::domake $builddir clean}
    }
  }

 method env-install {} {
    ###
    # Handle tea installs
    ###

  }

  method env-install {} {
    my unpack
    set os [::practcl::local_os]
    switch [my define get name] {
      tcl {
        set options [::practcl::platform::tcl_core_options [dict get $os TEACUP_OS]]
      }
      tk {
        set options [::practcl::platform::tk_core_options  [dict get $os TEACUP_OS]]
      }
      default {
        set options {}
      }
    }
    set prefix [my <project> define get prefix [file normalize [file join ~ tcl]]]
    lappend options --prefix $prefix --exec-prefix $prefix
    my define set config_opts $options
    puts [list [self] OS [dict get $os TEACUP_OS] options $options]
    my go
    my compile
    ::practcl::domake [my define get builddir] install
  }

  method go {} {
    set name [my define get name]